Detail  age dependency ratio of the old old-age dependency ratio; old-age index 老齢人口依存比率; 老年人口指数   rōrei jinkō izon hiritsu; rōnen jinkō shisū Altenlastquote; Altersabhängigkeitsquotient; Alterslastquote; Altenquotient; Altenkoeffizient; Altenlastquotient; Altenindex Comment